极地研究 ›› 2005, Vol. 16 ›› Issue (1-English): 1-12.
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Xu Jianzhong1, Sun Junying1,2, Ren Jiawen1 and Qin Dahe1
1 Joint Key Laboratory of Cryosphere and Environment, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
2 Key Laboratory for Atmospheric Chemistry, Centre for Atmosphere Watch and Services, Chinese Academy of Meteorological Sciences, Beijing 100081, China
Xu Jianzhong1, Sun Junying1,2, Ren Jiawen1 and Qin Dahe1
1 Joint Key Laboratory of Cryosphere and Environment, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
2 Key Laboratory for Atmospheric Chemistry, Centre for Atmosphere Watch and Services, Chinese Academy of Meteorological Sciences, Beijing 100081, China
摘要：
Aerosol samples are collected on the route of the Second Chinese National Arctic Research Expedition from July 15 to September 28, 2003.The concentration of water soluble ions (Na+, NH4+, Ca2+, Cl-, MSA, SO42- and so on) are analyzed. By correlation analysis,the ions can be divided into three groups: (1) Na+, Mg2+, K+, Ca2+, Cl-, SO42-, mainly from sea salt; (2) NH4+, NO3-,markedly from coastal regions of the continents; (3)Acetate, MSA, C2O42-, from other sources.Marine aerosols are the dominant origin, Cl- and Na+ are the most dominant anion and cation, respectively and these two ions (Na++Cl- account for 55.6% of the total aerosol loading. The mean equivalence ratio of NH4+/SO42- is 0.45, we suggest that ammonium and sulfate exist mainly as NH4HSO4. The concentration of NO3- shows three different patterns on the route of expedition: Japan Sea with median value of 15.2 neq·m-3; Sea of Okhostk and Bering Sea of 1.8 neq·m-3 and Arctic Ocean of 0.4 neq·m-3. Bering Sea is a high MSA area. Through the comparison of the concentration of main water soluble ions between the First and Second Chinese National Arctic Research Expedition,the variation matches each other.
